9992889 has 48 divisors (see below), whose sum is σ = 16511040. Its totient is φ = 6013440.

The previous prime is 9992869. The next prime is 9992891. The reversal of 9992889 is 9882999.

It is not a de Polignac number, because 9992889 - 2⁷ = 9992761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9992869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169342 + ... + 169400.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^9992889 is an apocalyptic number.

It is an amenable number.

9992889 is a deficient number, since it is larger than the sum of its proper divisors (6518151).

9992889 is a wasteful number, since it uses less digits than its factorization.

9992889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 120 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 9992889 is about 3161.1531123943. The cubic root of 9992889 is about 215.3923896102.

It can be divided in two parts, 9992 and 889, that multiplied together give a palindrome (8882888).

The spelling of 9992889 in words is "nine million, nine hundred ninety-two thousand, eight hundred eighty-nine".